Electrical signaling system.



F. M. SLOUGH.

ELECTRICAL SIGNALING SYSTEM.

APPLIGATIONIPILED JUNE 19, 1906.

Patented 001126, 1909.

FRANK M. SLOUGH, oi

E RESIGK MENTS, TO THE ELECTRICAL SIGNilLING SYSTEM.

essees.

To all whom it may concern:

Be it known that l, FRANK M. SLOUGH,

citizen of the United States, residing at ing systems, and has its: its object the ins 7 each pole-changer .magnet is controlled b provernentand simplification of such eye tems in the particulars which hereinafter appear. I

fjlhi's invention is particularly a; plieahle to vv'hat are known as harmonic signaling systems, wherein. current of different frequencies is employed to actuate. signals which are tuned so each of them will respond to only one frequency. in such systems it has been found desirable and, economical to emgloy pole changers driven by motor magnets at predetermined speeds or rates of vibration, and supplied with current from a storage battery orgenerator, w /1th. such gore changers there have been employed tran formers oro erlv desi ned to work on C. 1 t a: different frequencies supplied. Current its own contacts, as Well as current supp J to the corresponding transformer. it is oi course this current supply or signal current to the transfii-rnier that of the greatest portance, and. one. object of the present vention is to render the application oil this current more effective and at the same time to avbid interference with the motor currents or current supplied to line circuits,,tor talking or signaling, otherwise than through the pole-changers.

Briefly stated, my invention contemplates the provision of a battery or other source current tapped at one or more intermediate points between its end terminal-S, so as to give two or more sources of electroinotive force of approximately equal tension but alternately of opposite sign to i the same points. An intermediate point is so connected to one side of the primary winding on each transformer, and. the other terminals are so connected to means for alternating ini- ' them in connection with the other side of the primary, that the several divisional sources Specification of Letters 392d Application filed June 19, 1936.

Yeat- Patentc-il Get. 52%;, it'll-6'5 Serial i oriner with 2:. action than that prodi by sinipiy making and breaking the winery circuit, sn -lso to decrease the ninziber on? contacts and new gen erally necessary is such apparatus.

3: shall herein describe my invention applied to a telephone exchange systen'i wherein the co; .ncn talking; battery furnishes an-Ll ringing.

in the accom- 3 the figure a Q the central oiiice act a telephone in. r")

corn cen l .ctors e nductcrs pass 5 and in the de: respect to normali c in addition to in: 1 provide the selective keys is, whose contacts it). 11 open. These 1 wires 13, windings of P, Teen second ferent be respec ltey i c and it 7 u, and litere normally contects connected by A, 151 end 1-43., to the secondary fr were i, ll, 1 and which iillj/ conveniernzly very 16 cycles, cycles, 50 cycles, "oer second. The design of the such as to secure the hi hest efilciency in each case with the' part iculor.

icrics, it is a small rnuther to arrange cells as to give llic clicct shcwn in drawing.

It will be uinlcrsloml that l contemplate various non-essential changes and (lo ncl limit mysclf to any cf ihc spec fic details 0r ccnneciicns described.

The gist of thc invention lies in the method of ccnnec'ticn to the battery, and the corollary iuilures are the simplification of the pcle changers and the incrcasc in eliicicncy in the invention.-

lluving thus described my invcnti u, what l claim and dcsirc L0 secure by Letters Putcnt is:

1. ln a signaling system, linc wires lead-- ing from u ccutrul station to suhscribefs sluiion, a pole changer ail, ihc cent all stat-ion, such pulc changer containing a single \lhauling urim 2i scurce cl electric 21192 menus for c arming such pole chung r 1 such source by u circuit clcscd through such arm, u'n clcclric cumlucicr carried by uiul insulated from the urn), u irunsfcrmer haw inc; priunu'y mul sccvcnilury windings, the irimury of saiil l'rzmsl'criner lacing nurnmlly rmmcct cxl to said conductor, and circuits from such sum-cc adapted in he ClO-Siill. through such conductor us such ur vilu'utes, whcrchy currents clircc'tcri lhruugh such primary winding zrll ernalcly in opposite lircciicns.

2. in a signaling: i 'tcm, linc wires lamiing; from a central siuticn in u subscribcrs stuliun, a pole chanqcr at the c ntral tir .1; sncl pole changer ccntuin'. L single vibrating arm, a source of eleclric energy, means for opcrnting' such pclc changer frcin .sucli source b a circuit closed thruug'h such arm, an electric conducficr rurrieil by and insulated ruin the arm, a transformer iiuvlug priimu'y mul scccmlury Winrli'n I i'hc primary of said i 'zuisfurnicr being nornnilly conucciml i0 Sll l (OllilllCiUR circuits from such sourcc adapted us be closed through such conductor as such arm y'ihrutes Where hy curl-cuts are directed through such prmury winding alternately in opposite directions, an opcrulc1"s ccrel'circuit incurs i017 C()IlilLClIlll)j such (50!(l circuit to thc l wires, :unl a key associated with ihc (,fifll circuit for making connection from the sec- (HMlfLX'y winding of ihc l'runsformcr l0 such (()i'(l circuit.

3. In u si -nailing systcm, lincwires lczi:

stallion, u pole change? at the central i101 such pulc chun {ti-i containing a 5111 i a source cf clcctric vibrating arm, I

operating such pole changer frcin mcuns i r such source, an insulnlml member carriccl by' cnmluclcr, h

sunrce lulu}; n her as such urn rents arc winding ul in a ing from u stuiicn, a pole c such pole chzu ing arm, :1 sou r cpcruiim scurcc, Hi-l1! arm i uzniur Y prim: :ticus.

:rihers iai sta non,

killing); a ihrab 0 energy, means er from such icr 'v by such inar z' and 0 suii'l iransthe prin "cm such mail in ihe linov Will-$ 'nil'h the cm ,irciiil;

ruin the sccciu H18? i0 such sigma 9n chiral 9' ii. .fi hugger iron! rcaigii such menus 'fc such sour urnr, a lruns onclury Whiilllig ncctcd icliiiilSh v iliru iii 21g n a Z; W s- D) I single ccnduc from such crin' .ch prunurz wuicing, x (in rcclcd. through nulely in or in a si n lug from :2 cc stz'rticn, u ule chzm such pclc cl anger braking; arm, means 521' such source, b arm, ifi-i secondary w nccicfi. i0 the crux i pox: cl 1 igcr iruiu i cic ccl t rough such ncv pr and vibrating arm for single CGUllUClO wit frcni fcrrnc central station, a plurality of tuned pole changers at the central station, each of such polechangers containing a single vibrating arm, a. source of electric energy, means for operating each of such pole changers trom such source by circuits closed through its vibrating arm, an electrical conductor carried by and insulated from the arm, transformers having, primary and secondary windings, said conduct-or of each corresponding vibrating member being normally connected to said transformer, and circuits from such source adapted to be closed through each of such conductors as the corresponding vihrating arm operatcs, whereby currents are directed through such primary windings alternately in opposite directions.

8. In a harmonic signaling system for telephone lines, line wires leading from a central station, a plurality of tuned pole changers at the central station, each of such pole changers containing a single vibrating arm, a source of electric energy, means for operating-each of such pole changers from such source by circuits closed through its vibrating arm, an electrical conductor carried by and insulated from the arm, transformers having primary I and secondary windings, said conductor of each corresponding vibrating member being normally connected to said transformer, the circuits 't'ron'i such source adapted to beclosed through each of such conductors as the corresponding yibrating arm operates, whereby currents are directed through such primary windings alternately in opposite directions, an operators cord circuit, means for connecting such cord circuit to the line wires, and keys associated with the cord circuit for making connection from the secondary windings of the transformers to such cord circuit.

9.1111 a harmonic signaling system for telephone lines, line wires leading from a central station, a plurality of tuned pole changers at the central station, each or" such.

pole changers containing a single vibrating arm, a source of electric energy, means tor operating each of such pole changers from such source, an insulated zneml'ier carried by such arm, transformers having; prinun'y and secondary windings, said member ol' each corresponding pole changer being normally connected to the transjt m'mcr, and circuits from such source adapt d to be closed through each of such :neinl: as the corresponding vibrating arm opei-at whereby currents are directed through primary windings alternately in oppos to directions. 10. in a harmonic signaling "em l: telephone lines, line wires lentmg from a central station, a plurality of tuned changers at the central station, each ct polo changers containing a, sh Yibra-- arm. a source of elm-trio operating each of such pole "q such source, an insulated by such arm, trans?" and secondary wind each corresponding poi mally connected to the from such source ada through each of such inen'ibers responding vibrating arn'i opera currents are directed through such windings alternately in opposite ti an operators cord circuit means necting such cord circuitto the line and keys associated with the cord circuit making connection from thesecondar ings of the transformers to such cord. cm" 11. In a harmonic signaling sysicm telephone lines line wires leading" central station to a suliscribcrs plurality of tuned pole changers at the tral station, each 0i such polc changers lttillil'lg a single vibrating arm, a soul electric energy, means for operating each such pole chal'igers from such source b circuit closed throng its vibrating 1 transformers ha ring primary and s windings, and means normally connected i; said transformer operated by cachvil arm for closing circuits through a sin: conductor carried by and insulated such arm from such soul-cc to the prin winding of the transformer. eorrespomli to such vibrating arih, .vherehy currents a! directed through the primary windings alternatcly in opposite diroctioi 12. In a harmonic signalingsys" telephone lines, line wires leading central station to a subscriber! I plurality of timed pole changers at the tral station, each of such pole chan 'e i, tainiug a single vibratingarm, a clcctzi'ic encl y, mean tor operating ich polo cliang 'rrcui such sou "cuit closed tin-on h i vibrating translorn'ici's having i'inu and so: windin I ncaos normally aur -l d lo ti'ansl'oi'un operated if. each xii tor closing, circuits l ductor ca r'ied by and ..1-;ulai,ed Fi arm from such source to the primal ing ot' the lrunsl'oruier euri'cspondiu vibrating arm, u'hcrcbv currents are through the primary u'indiu, in opposite directions, an opcraiws P circuit, means i'or connecting such cord unit to the line Wires. and keys a iociul with the cord circuit tor trial-ring nine from the secondary windings ot lhe ii.

urine to such cord circuit.

i All a signaliu tcl lllll \\'.'}'E- 131;; 'i'on'i a :rcntral 2 a pole cum vibrating arm of the pole changer consisting of two members insulated from each other, one of such members normally connected with the primary winding and adapted as the arm is vibrated to alternately close circuits through itself to such source such that current from such source is caused to flow alternately through the primary winding in. opposite directions.

1a. In a signaling system, line wires leading from'a central station to a-subscribers station, a pole changer at the central station, a transformer having primary and secondary windings, the vibrating arm of the pole changer consisting of two members insulated from each other, each member adapted to form part of a circuit controlled thereby, the contacts carried by such members being in electrical connection therewith, acommon source of current for supplying the two circuits, one circuit controlling the operation of the pole changer and the other an independent eircuit through the primary of the transformer, whereby current from such source is caused to flow alternately through the primary Winding in opposite directions.

15. In a signaling system, line wires leading from a central station to a subscribers station, a pole changer at the central station, a source of electric energy, a transformer having primary and secondary windings, such pole changer containing a single vibrating arm, an insulated member carried by. the arm, such member consisting in a single electrical conductor adapted to ciose circuits through itself from such source as the arm is vibrated for causing current to flow through the primary winding alternately in opposite directions.

In testimony 'whereof I attix my signature in presence of two witnes.

\Vitnesses WM, V. DEAN, A. A. HA'ri-IAWAY. 

